Outlet-gate and hopper.



N0. 835,595. PATENTED NOV. 13, 1906- OUTLET GATE AND HOPPER.

PPLIUATIOH FILED HAY 23. 1908.

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wwwcmo No. 835,595. PATENTBDYNOV. 13, 1906. W. A. BISHOP. OUTLET GATEAND HOPPER.

APPLIGATION FILED MAY 22. 1906.

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N0. 835,595. PATBNTED NOV; 13, 1906. W. A. BISHOP. OUTLET GATE ANDHOPPER.

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1 4m 2,34 5mmm 5 ABRLIOATION FILED MAY 22, 1906.

a. 544w M UNITED sTATESrqPfiTEN'f WILLIAM A. BISHOP, OF NEWARK, NEWJERSEY, ASSIGNOE OF ONE-HALF T CALVIN TOMKINS, OF NEW YORK, N. Y.

OUTLET-GATE AND HOPPER.

Specification of Letters Patent.

Patented Nov. 13, 1906.

, To all whom it may concern.-

Be it known that 1, WILLIAM A. BISHOP, a citizen of the United States,residing at Newark, Essex county, State of New Jersey, have inventedcertain new and useful Improvements in Outlet-Gates and Ho pers, ofwhich the following is such a full, 0 ear, and exact description as willenable any one skilled in the art to which it appertains to make and usethe same, reference beinghad to the accompanying drawings, forming partof this specification.

Much difficulty has heretofore been experienced in'the use ofoutlet-gates and in the use of charging-hoppers having outlet gates orvalves in handling large rough material, and particularly materialhaving a tendency to arch or to stick or adhere to the parts of theapparatus, such as g rough asphalt, crude rub er, clag See.

My present invention is inten come certain of the drawbacks to thehoppers and gates heretofore in use and to provide a device of thisclass in which the arching or choking of the material within the hopperis prevented and a positive and smooth action of the gate or valve ofthe hopper is assured.

With these and other objects in view my invention consists in thevarious novel and peculiararrangements and combinations of the severaldiflerent arts of the apparatus,

all as hereinafter fu ly set forth and then' pointed out in the claims.

' I have illustrated types of m invention in the accompanying drawings,W erein indicated bythe line 1 1, Fig. 2, transversely of the gate andslide. tical longitudinal sectional view of the apparatus shown in Fig.1 and with the carrierslide and the gate shown in dotted linesas drawnbackwardly about third-way of the range of movement of the carrier.Figs. 3

and 4 are end and longitudinal sectional views,

respectively, of the form of ap aratus shown in Figs. 1 and 2 and withrac and pinions for operating the slide and gate. Figs. 5 and 6 aresimilar views. to Figs.- 1 and 2, respectively, of amodified form ofapparatus. Flgs. 7 to 12, inclusive, are diagrams showing the relativepositionsof theparts in the opera tion of thegate and its carrier-slide;

' Referring to the drawings, in which like sum-rock, chalk,

ed to over- Fig. 2 is a central vernumbers of reference designate likeparts throughout, 1 is a supporting-framework, in which is mounted independing position the hopper 2, which is shown as. rectangular in.

horizontal section with the body thereof in-1 clined downwardly at anangle of about sixty degrees and with the front and rear sides 3 and 4,respectively, running substantially garallel with each other at thisinclination. ach of the remaining sides 5 and 6, res ectively, isinclined to the vertical, so that t ey lie indiverging planes, and theyform a down-' wardly and outwardly flaring chamber, this;

particular arrangement being adapted to prevent any possible arching ofcoarse rough material in the hopper. The side 3 of the hopper, which maybetermed the forward one and which is inclined outwardly relatively tothe bodyof the hopper, is hinged at 6 at its upper end so that thisentire side may be swung outwardly as far as necessary in case any ofthe material within the hopper sticks or adheres to the sides thereof,so that com plete access may be had to the interior for I clearing itout. This hinged side 3 is securely ocked in closed position by means ofa toggle-joint formed by an arm 7, hinged to the side 3 at the point 8,and an arm 9,-hinged to the point 10 on a fixed piece on theframing 1,the two arms being hinged upon the under sides together at the point 11,so that the togiglle may be opened or raisedb forcing upwar yboth of theabutting en s of the arms 7and 9, a link 12 being joined to a fixedpiece 13 on the arm 9 'for this urpose. Figure 1 IS a sectional view ofmy improved device, the section being taken on the plane,

Above the hopper 2 is a c ute-like structure 14, the mam part of whichis inclined away from the upper end of the ho per in the oppositedirection from which the ho er itself is inclined to the horizontal.v 's

chute is used for guiding or deflecting the material into the hopper,the chute being cut away at 15, so as to form practically a threesidedstructure providing a comparatively horizontally-reciproeating carrierorslide 11.

This carrier-slide is formed withtwo similar sides 18, secured rigidlytogether by suitable cross-pieces 19, so as t form a skeleton reach theclosed end of the cam-slot, at which structure, and each of the sides 18is pro- 3 vided with a cam-slot 20, the main part 21 of which extends inthe horizontal plane in which the slide operates, while the other or lowart 22 of the cam-slot extends downwar ly and forwardly at a desiredangle,

ning on a fixed track 25, which is fastened.

upon a stationary stringer or piece 26. This track is somewhat more thandouble the length of the horizontal portion of the carrierslide and istwo and one-half times the length of the discharge-opening of thehopper, measured in the direction in which the slide moves, and theparts are so related that in normal or closed position the carrier-slidestands well beneath the discharge-opening of the hopper, from whichposition it may be drawn backwardly, so as to either partially orentirely clear the opening in the hopper.

The gate or door 16, which closes the discharge-opening of the hopper,is mounted upon the rollers or wheels 28, two of which lie upon each oftwo opposite sides and travel within the cam-slots 20 of the adjacentside of the carrier-slide, the relative movement between the gate andthe carrier-slide being substantially a tilting and horizontallyslidingmovement. This gate 16 is carried directly beneath the discharge-openingof the hopper, so as to completely shut off the same when the gate is innormal closed osition, as indicated in Figs. 1, 2, 5, and 6. T e artsare so related that when the gate 16 is c osed the carrier-slide 17stands at its forward limit of movement, and the rear pair of rollers 28of the gate lie at the rear end of the horizontal stretch 21 of thecam-slot, while the forward pair of rollers of the gate stand at the'forward end of such horizontal part of the slot. See Figs. 2 and 4.) Asthere is comparatively little friction between the gate 16 and the slideby reason of the antifriction-rollers 28, the weight of the material inthe hopper bearing upon the gate serves to hold it in fixed position asthe slide 17 is drawn backwardly, which may be conveniently done by apull-rod 29, connected with an eye 30, fixed on the back end of theslide. As soon, however, as theslide is drawn back a slight distance thedownwardlydnclined or low part 22 of the cam-slot in the slide ispresented to the forward pair of rollers 28 of the gate, and this causesthe forward or discharge end of the gate to be gradually depressed, and

thereby opened by the superimposed weight of the material. This downwardangular movement of the gate on the axis of its rear pair of wheels 28as a center of motion continues until the forward wheels 28 thereof timethe slide has moved backwardly about a third of its range of movement,while the gate has not been translated horizontally, though it has beenswung open, as indicated in dotted-line position thereof, Fig. 2, and inthus opening the gate, which for some pur poses may be sufficient, boththe weight of the ,load on the gate and the action of the cam-slots inthe slide on the gate are utilized. Moreover, the gate when opened thisdistance is held securely in osition by the engagement of its forwardrollers with the closed end of the camslot.

In Figs. 3 and 4 the sliding carrier of the gate is shown as beingprovided with fixed racks 40, one located upon either side of thestructure, and which racks are engaged by pinions 41, respectively, thepinions being fast on a shaft 42, which may be operated by hand or inany suitable manner. The turning of this shaft in one direction servesto draw back the carrier either to its full open osition, as shown inFig. 4, or to any point iietween such extreme position and its closedposition. The reverse movement of the shaft 42 will feed the racks inopposite direction and return the carrier with the gate and finallyclose the same.

In the diagrams in Figs. 7 to 9, inclusive, the complete operation ofthe gate is fully shown. In Fig. 7 the relativepositions of the partsare similar to the dotted-line posi. tions shown in Fig. 2, and in whichpositions the slide stands at about the one-third point of its fulltraverse. As the slide is moved back to its extreme limit, as shown inFig. 8, the gate maintains its inclined position, but is carried backentirely clear of the dischargeopening of the hopper, so that it doesnot in any way obstruct the discharge therefrom. The gate may begradually closed by returning' the slide from its extreme open position(shown in Fig. 8) to its normal position, (shown in Fig. 2,) and in thismovement the gate 16 will remain in its downwardly-inclined positionuntil the finger or stop,31 on the back end of the gate takes againstthe edge of the rear side 4 of the hoper, as shown in Fig. 9, and thisserves to old the gate from further partaking of the forward motion ofthe slide, the continued forward motion of which begins to elevate andclose the forward end of the gate by reason of the forward wheels 28 ofthe gate traveling upwardly in the inclined part 22 of the camslot, andthis continues until the parts assume the positions shown in Fig. 2 infull lines. I

In the modification shown in Figs. 5 and 6, respectively, theconstruction is better adaptedfora smaller a paratus, and the gate ismade self-contained by having the entire apparatus mounted on the frameor casting 32, having the concealed tracks 33 .for the wheels 24 of thecarrier-slide 17 to travel in,

. opening of the hopper 2. This modified construction shown 1n Figs. 5and 6 is designed more especially for a gate for smaller instal- .thehopper empty,

ments, which may be applied directly to the lower end of a chute or bin44, on the lower ends of which is a flange 45, to which the flange ofthe frame containing the sliding carrier is secured. In this form theframe of the carrier is provided with a handle 46, by means of which thecarrier-slide may be operated and adjusted into different positions ofits range of movement.

It will be noted that after the gate 16 is depressed or dropped into itsinclined position and then beglns to travel rearwardly with thecarrier-slide the surface of. the gate acts like a withdrawing inclinedplane, and as the pressure of the material in the hopper is graduallylessened the gate withdraws very easily, thus combining the positiveopening action under load ofa hinged drop-door with the features of anordinary-plain sliding gate or yalve. An important advantage of thisarrangement is that while the gate 16 acts somewhat as a hingeddrop-door it does so without occupying the large space required for theoperation of such a door, and it may also be closed without thedifficulty incumbent upon the ordinary hinged door. Fur-- thermore, anordinary sliding gate cannot be used with certain materials, while thereis no limitation in this respect in the use of the gate herewith shown.

In closing or returning the gate to its normal position either of twomethods can be used. The gate can either be slid back under the hopperwhile dropped or lowered in the slide, in which case it is preferable tohave the lug or stop 31 on the back of the gate coming in contact withthe edge of the hopper and holdin it from further translation, while thesli e continuing to move into closed position acts as a wedge on the ateand raises it. If it is desired to cut off t e material flowing throughthe opening of the hopper, and particularly small-sizestuff, the gatecan be provided with a retracting-spring 36, (see Fig, 1,) which issecured between a fixed point on the under side of the gate and a fixedpoint toward the rear end of the slide 17. Normally this springis notunder tension, but is put under tension during the first movement of theslide, as in-' dicated in the diagram in Fig. 10,-in which the slide isat its half-way position on the backward movement when the gate is infull drop position. As the slide is moved back -to its extreme positionthe gate clears the material passing from the hopper, and it being thusrelieved of the weight the spring 36 acts to draw the gate 16'backwardly in the slide into horizontal. sition, as indicated in Fig.11', and in whic relative positions the slide may then be moved forward,carrying the ate in horizontal position and cutting off t e flow ofmaterial, Fi 12 showing the half-wa closed ositi'on o the gate'as it iscarried ack by t e slide. p .This improved form of gate may be readilymodified in its construction to suit the requirements for differentpurposes, and it can be operated in different positions and of coursemay be made in any desired shape. By means of rubber or other suitablepack' ing the gate can be made to control an opens ing, which can beopened and closed instantly from a full, clear, and unobstructed openingto one that is air and water tight. In oper- -ating the hopper I prefernot to-fill the same above the level of the upper end of the hopper andbelow the chute '14, so as to avoid any liability of choking or archingof the material therein. The dimensions of the hopper itself may be madeso as to hold a definite amount of it ma be made amply large, so that inpractice tlie hopper would never be filled above the level of its upperend.

In using the term swinging as defining weight or bulk of the material,or

the movement of the gate 16 when its dis;

wardly by the slide at the time such outward movement of the gate takesplace, as in some cases the gate may recede with the slide at the sametime thegate is being dropped down or depressed at its discharge end,thus combining a translating movement with a swinging or tilting one.

11 order to scrape the gate 16 any material which may adhere thereto, Iprovide a depending swinging scraper 50, consisting of a plate ofsuitable material hinged at 51 to one side of the discharge-opening .andin such position that the lower edge of the plate is constantlyincontact with the upper surface of the gate, it being kept so bygravity and bythe weightof any material resting upon or passing overthe'plate. When the ate is in normal closed position, the scraper-p ate50 lies fiat against .the gate, as shown in Figi'l. As the gate ti sdownwardly the scraper-plate 50 follows after it, as shown in 7, andas'the gate begins to recede in the ackward movement of the slide thegate tends to tilt away from the back of the plate. Nevertheless, theedge thereof remains in contact with the upper surface of thescraper-plate Wlll act to scrape any loose mafrom the inner face of"ate. "In this movement theserve always to eep it clean. After the platehas effected this scraping of the gate, as

which it is attached, and allows the disthe said gate charge material toslide over it.

It will be understood that in the use of this discharge gate or valve 16the dischargeopening of a hopper or the like may be controlled at willand the sides of such opening regulated or varied, as desired, suchregula- E tion being shown in the various views, Figs. 7 to 12,inclusive. sides of the opening, and consequently the amount of materialdischarged or flowing therethrou h, any WGHzkIlOWIl means may be usedfor he ding the carrier-slide in fixed pof sition.

Having thus described my invention, what i I claim, and desire to secureby Letters Patent, is

1. The combination of a discharge-openmg, a gate for the said opening,means for swinging the gate open'at its discharging end 2 throughacertain angular distance and then moving sald gate backwardly, andmeans for returning the gate to closed position.

2. The combination of a discharge-open- 5 ing, a gate for the saidopening, means for swinging the gate open at its discharging end througha certain angular distance and maintainmg said gate in its angularposition and movmg it backwardly, and means for returning the gate toclosed position. 3. The combination of a discharge-openmg, a gate forthe said opening, means for swinging the gate open at its dischargingend through a certain angular distance and maintaming said gate in itsangular position and moving it backwardly, and means for moving saidgate forwardly in its angular position and radually restoring it to itsnormal plane to c ose the opening in the hopper. 4. The combination of'adischarge-openmg, a gate for the said opening, a carrier slide in whichsaid gate is mounted with a sliding connection between the two, thedischarging end of said gate also having an angular movement onsaidslide during the initial movement of the slide when drawn back andthen partaking of the movement of the slide as it completes its backwardmovement,

eing restored to normal position and closed by the return movement-ofthe carrier-slide.

5. The combination of a discharge-opening, a gate for the said opening,a carrierslide in which said gate is mounted with a sliding connectionbetween the two, the discharging end of said gate also having an angularmovement on said slide during the initial movement of the slide whendrawn back and being held by the weight of the material againsttranslating movement until its angular movement is practically completedand then partaking of the movement of the slide as it completes itsbackward movement, the

In such regulation of the;

' said gate being restored to normal position and closed by the returnmovement of the carrier-slide.

6. The combination of a discharge-opening, a gate for the said opening,a sli-dc in which said gate is mounted with a sliding connection betweenthe two, the discharging end of said gate also having an angular move-'ment on said slide during the initial movement of the slide when drawnback and then in its angular position partaking of the movement of theslide as the latter completes its backward movement, the said gateremaining in its angular positionas the slide begins to move back, andmeans for tripping or E holding said gate while the slide is returningto its normal position and thereby closing the gate.

7. The combination of a discharge-open- 1 ing, a gate for the saidopening and adapted to be swung open or depressed at its dischargingend, a slide mounted in suitable bearings, a sliding connection betweensaid slide and gate acting to swing open or depress the discharging endof said gate as the slide is drawn back and to close or restore the gateto normal position when the slide is returned.

8. The combination of a discharge-opening, a gate for the said openingand adapted to be swung open or depressed at its discharging end, asuitably-mounted carrierslide in which said gate is mounted to slide andby which it is carried, means by which the discharging end of said gateis opened or depressed by the backward movement of the slide while theweight, of material on the gate holds it from moving with the slide, thesaid gate being restored to normal position and closed bythe returnmovement of said carrier-slide.

9. The combination of a discharge-opening, a gate for the said openingand adapted to be swung open or depressed at its discharging end, asultably-mounted carrier-slide in which-said gate is mounted to slideand by which it is carried, means by which the discharging end of saidgate is opened or depressed by the backward movement of the slide whilethe weight of material on the gate holds it from moving with the slideand then moving said gate backwardly with the slide. the said gate beingrestored to normal position and closed by the return movement of saidcarrier-slide.

10. The combination of a discharge-opening, a gate for the said openingand adapted to be swung 0 en or depressed at its dischargmg end, a sli emounted in suitable bearings and provided with a cam device which ismaintained in sliding connection with said gate and adapted to bothdepress the gate at its discharging end when the slide is drawn back andto restore the gate to normal position when the slide is returned.

1L The combination of a discharge-open- IIO ing, a gate for the saidopening and adapted to be swungppen or depressed at its discharging end,a slide mounted in suitable bearin s and provided with a cam groove orslot, sliding connections between said gate and cam groove or slot ofthe slide and acting to open or depress the discharge end of the gatewhen the slide is drawn back and to close or restore the gate to normalposition when the slide is returned.

12. The combination of adischarge-opening, a gate for said opening,means for swinging the gate open at its dischargin end through a certainangular distance an then moving said gate backwardly and comprising aslide with which the gate is in sliding connection, a spring for drawingsaid gate backwardly on said slide after the ate has assumed its angularposition and while said slide is moving backwardly, and means forreturning the gate to closed position.

13. The combination of a discharge-opem' ing, a gate for the saidopening, a carrierslide in which said gate is mounted with a slidingconnection between the two, the discharging end of said. gate alsohaving an angular movement on said slide during the initial movement ofthe slide when drawn back and then partaking of the movement of theslide as it completes its backward movement, the said gate beingrestored to normal position and closed by the return movement of thecarrier-slide and a rack and pinion for operating said slide.

14. The combmation of a discharge-opening, a gate for the said opening,and a pivoted scraper engag ng the inner face of the gate for scra ingmaterial therefrom in theoperation of t -e gate.

15. The combination of a discharge-opening, a slidin and tilting gatefor the said 0 ening, an a scra er constantly engaging t e inner face ofsai gate for scraping material therefrom. in the operation of the gate.

16. The combination of a dischargeopen ing, a sliding and downwardly-tip111g gate for said opening, a. swinging diepending scraper mounted toone side of the opening and engaging with its lower ed e the inner faceof said gate and maintained in said engagement for scraping materialfrom the surface thereof.

17. The combination of a discharge-opening. a gate for said 0 eningadapted to be swung open at its disc arging end through a certain.angular distance and then moved backwardly to clear said opening orpartially.

so, means for so moving the gate and returning it to .closed position,and a swinging depending plate mounted at the side of the opening towardwhich the gate is carried and having its lower edge in constantengagement with the inner face of said gate for scraping the materialtherefrom.

18. The combination of a hopper, a tilting and sliding. gate for thedischarge-opening in the hopper, and a swinging scraper-plate mounted toone side of the discharge-opening and having its lower edge in constantengagement with the inner face of said gate for scraping materialtherefrom, the said plate forming practically a continuation of one sideof the hopper when the gate is drawn 19. A ho p'er inclined to thevertical lane and gradually enlarging in a downward irection forreventing arching or choking of. the inateria therein.

20. A ho er provided with a dischargeopening and iaving part of its sideadjacent said opening hinged, and meansforlocking said hinged part 111closed position.

21. A hopper having a rectangular crosssection with two of its oppositesides parallel with each other and incl ned to the vertical and the tworemaining sides inclined outwardly in a downward direction.

22. A happier provided with a dischargeopening an said opening hinge atits upper end and swinging outwardly, and means for locking said hingedpart in closed osition.

In testimony whereof I ave hereunto set my hand in the presence of thetwo snbscrib ing witnesses.

WILLIAM AI BISHOP.

Witnesses SAMUEL J. ROsENSoHN. A. M. I'lAYES.

anngiart of its side adjacent Y

